One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,6)(4,7)(5,8)(11,15)(13,16)(17,18)(19,23)(20,34)(21,26)(22,27)(24,36)(25,38)(28,39)(29,41)(30,44)(31,42)(32,43)(33,46)(35,48)(37,45)(40,47) involution — undirected(1,3)(2,5)(4,8)(6,7)(9,10,12,14)(11,13,15,16)(17,19,21,31)(18,23,26,42)(20,35,36,30)(22,33,39,32)(24,44,34,48)(25,40,45,41)(27,46,28,43)(29,38,47,37)(1,3)(2,6)(4,8)(5,7)(9,11,12,15)(10,13,14,16)(17,20)(18,24)(19,29)(21,36)(22,38)(23,40)(25,28)(26,34)(27,45)(30,32)(31,47)(33,35)(37,39)(41,42)(43,48)(44,46)(3,8)(5,6)(10,14)(13,16)(17,20)(18,25)(19,30)(21,36)(22,37)(23,41)(24,28)(26,45)(27,34)(29,32)(31,35)(33,47)(38,39)(40,42)(43,48)(44,46) involution — undirectedA Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.